Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6d95613f6ea418…

MALICIOUS

PDF

80.1 KB Created: 2021-03-05 18:10:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 89a5be22a85892aa52d7d406c9f4caa7 SHA-1: ebb1f17fa28960937d17782d3333cf471c4eba88 SHA-256: ef6d95613f6ea418aa0aff7af504097d2a908dda460d05b55b183d307de3d177
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/aws?utm_term=the+ones+who+walk+away+from+omelas+short+summary PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374536/normal_600e11848d8f7.pdfIn PDF document text
    • http://fodefon.getenjoyment.net/blackmagic_atem_mini_pro_iso_production_switcher.pdfIn PDF document text
    • http://vvd.bar/dijixizerorululamg0n0.pdfIn PDF document text
    • https://latapelubatute.weebly.com/uploads/1/3/5/9/135960370/9792701.pdfIn PDF document text
    • https://wubiwadodeta.weebly.com/uploads/1/3/4/5/134577579/1967787.pdfIn PDF document text
    • https://rutelixiriselop.weebly.com/uploads/1/3/4/7/134748314/3334602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470677/normal_603505bd76ab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_600a469da3c7f.pdfIn PDF document text
    • http://fagemolorano.iblogger.org/evaluate_the_expression-_single_variable_answers.pdfIn PDF document text
    • http://frontglass.xyz/arthrex_pars_technique_guideiqcgu.pdfIn PDF document text
    • https://duwaratax.weebly.com/uploads/1/3/4/6/134621450/6914556.pdfIn PDF document text
    • https://gojupisot.weebly.com/uploads/1/3/4/0/134016698/mekexep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374838/normal_5fc897fd320dc.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/vavig.pdfIn PDF document text
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/d2430a9ae2.pdfIn PDF document text
    • https://powotatetodo.weebly.com/uploads/1/3/0/7/130738650/wikemo-xetawodulesox.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/what_is_diverse_learning_programme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://notijopozij.epizy.com/decision_tree_python_example.pdfIn PDF document text
    • http://bokakemipik.epizy.com/koweru.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/what_is_the_difference_between_32_and_64_bit_computers.pdfIn PDF document text
    • http://bumojomoso.rf.gd/taliwuvozenajenaxomufop.pdfIn PDF document text
    • http://zewadomi.myartsonline.com/what_is_surrealism_in_photography.pdfIn PDF document text
    • http://jokipuzovorije.epizy.com/10255596688.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF9 5216 bytes
SHA-256: b6fbf9becaa45dc53089ef287a1bb6df5fe9ed790e7e93ae8bf8e2d8e55767df
font_01_sfnt_off00010ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA1 10656 bytes
SHA-256: c6edb78e06dd197f891f1c039a4b11d9697d54e0da6f5145c4a9bb40b36ba6ef

Open this report in the interactive analyzer, or submit your own file for analysis.